排灌机械工程学报2013，Vol.31Issue(6)：461-465,5.DOI:10.3969/j.issn.1674-8530.2013.06.001
可调导叶式轴流泵马鞍区水力特性试验研究
Experimental study on hydraulic performance of saddle zone in axial flow pump with adjustable guide vane
摘要
Abstract
In order to analyze the effects of adjustable guide vane (AGV) on axial pumps working in saddle zone,in the hope of optimizing adjusting laws,performance test of a new axial-flow pump with AGV was carried out on the pump test bed.Q-H,Q-ηand Q-P curves at different guide vane angles were obtained.The effects of AGV on hydraulic performance of the model pump in saddle zone were analyzed.The results show that,at the same flow rate,head and efficiency of axial flow pump increase as guide vane angle is adjusted from 0° to-5°.With AGV,the separation vortex in the flow channel is suppressed effectively; flow regime at pump outlet is optimized obviously; kinetic energy recovery rate is improved.Head and efficiency of the pump are improved by 0.15 m (0.046 9Hd) and 1.93％ respectively.The critical flow discharge is decreased by 0.004 94 m3/s and the range of saddle-shaped zone is narrowed by 6.64％,broadening the range of stable working zone.At guide vane angle of-5°-0°,the shaft power changes little.In this experiment,the best values of hydraulic performance obtained are at-5° guide vane angle,but they can be further improved.关键词
轴流泵/可调导叶/马鞍区/模型试验/优化Key words
axial flow pump / adjustable guide vane / saddle zone / model test / optimize分类
农业科技引用本文复制引用
钱忠东,王凡,王志远,周皖..可调导叶式轴流泵马鞍区水力特性试验研究[J].排灌机械工程学报,2013,31(6):461-465,5.基金项目
"十二五"国家科技支撑计划项目(2012BAD08B03) （2012BAD08B03）
国家自然科学基金资助项目(51079106) （51079106）
